Electric Arc Furnaces

for fusing white corundum, brown corundum, dense corundum, zirconia corundum, magnesia, alumina-magnesia spinel, zirconia, alumina, mullite,etc. 

Fused magnesia processing is technology of high energy consumption. Our company apply new fusing technology and equipment with low energy consumption and high efficiency which allows to reduce the power consumption cost and to reduce the emission of pollutants.


We have researched the technology on this topic as follows:

We apply 6 phases output for transformer, and such method can decrease the impedance, increase the arc voltage for the purpose of increasing the fusing efficiency (saving of the energy about 1,5% energy).

We apply the large section water cooling cable, which decreases the losses of heat resistance, and increase the arc voltage (saving about 1,0% energy).

We apply conductive arms. The electric stream is increased, the losses of the heat .resistance are decreased, and the electric arc is increased (saving 2,0% energy)

The electrodes clamps is adopted by using nonmetal material. (saving for 1,0% energy ).

The furnace cover is protected. The inner surface of the furnace cover is rammed with refractory materials, that prolong the life of the furnace cover and decrease the losses of heat (saving 1.0% energy).

We adopt the automatic adjusting control system for the electrodes lifting (PLC + variable-frequency motor) to stabilize the electric arc and work without error (saving 2,0% energy).

We adopt two steps dedusting installation to minimize the air pollution. 

To optimize the performance of the electrical furnace, a copper-steel current conducting arm is implemented. This innovative design offers several significant advantages, including enhanced arm strength, extended service life, reduced internal resistance, minimized loss of resistance heat, and improved arc voltage.

The heavy current circuit comprises various essential components, such as the secondary outlet terminal connection copper bar from the electrical furnace transformer, a pliable compensator, a copper tube penetrating the wall, a cable gland, a large-section internal water-cooled cable, a conductive transverse arm, an electrode clamp, graphite electrodes, and a sturdy support system.

Efficient cooling is achieved through the water-cooled systems integrated into the copper tube penetrating the wall, the water-cooled cable, and the conductive transverse arm. These components are carefully designed to effectively dissipate heat and ensure optimal operating conditions.

The overall design approach focuses on reducing three-phase impedance imbalance (aiming for a value of less than 4.5%). This is achieved through meticulous calculation of short network engineering and the adoption of a space triangle layout. By striving to achieve balanced and rational distribution of power input across each phase of the furnace, the smelting duration is shortened, and the service life of the furnace lining is significantly improved.

The implementation of the copper-steel current conducting arm, along with the carefully designed heavy current circuit and efficient cooling mechanisms, demonstrates a commitment to enhancing performance, extending service life, and improving operational efficiency in electric furnace applications.

The adjustment of the electrode's vertical position can be seamlessly automated, allowing precise regulation of the arc power input into the furnace to meet the specific requirements of the smelting process. This automation is achieved through a sophisticated control system that enables operators to increase or decrease the signal as needed by simply pressing designated buttons. Moreover, manual control over the electrode's raising and lowering is readily available during the electric arc furnace's normal operation.

Distinguished by its superior performance, this regulator surpasses all other control circuits of its kind. In addition to encompassing the functionalities of conventional regulators, it incorporates a range of advanced functions and features, including but not limited to:

1. Enhanced precision and accuracy: The regulator ensures meticulous control over the arc power input, resulting in precise and accurate adjustments for optimal smelting performance.

2. Real-time signal manipulation: Operators can conveniently modify the signal in real-time, empowering them to respond promptly to changing process demands or conditions.

3. Versatile manual control: In addition to automation, the regulator allows operators to exercise manual control over the electrode's vertical movement at any given time.

4. Unparalleled reliability: With robust design and construction, the regulator exhibits exceptional reliability, ensuring uninterrupted and stable operation even in demanding industrial environments.

5. Advanced safety measures: The regulator incorporates comprehensive safety features, including protective mechanisms and fail-safe systems, to safeguard personnel and equipment during operation.

6. Easy integration: Designed for seamless integration into existing industrial setups, the regulator facilitates straightforward implementation without requiring extensive modifications or reconfigurations.

By encompassing these additional functions and features, the regulator sets a new industry standard, providing comprehensive and advanced control capabilities for electric arc furnace operations.

Fused Alumina Furnaces

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